diff --git a/libs/sofia-sip/.update b/libs/sofia-sip/.update
index 2ae170a80f..e208c67c9e 100644
--- a/libs/sofia-sip/.update
+++ b/libs/sofia-sip/.update
@@ -1 +1 @@
-Tue Mar 24 10:36:48 CDT 2009
+Tue Mar 24 10:37:37 CDT 2009
diff --git a/libs/sofia-sip/libsofia-sip-ua/nta/nta.c b/libs/sofia-sip/libsofia-sip-ua/nta/nta.c
index 7837253b80..342e94ec2c 100644
--- a/libs/sofia-sip/libsofia-sip-ua/nta/nta.c
+++ b/libs/sofia-sip/libsofia-sip-ua/nta/nta.c
@@ -4391,7 +4391,7 @@ char const *nta_leg_tag(nta_leg_t *leg, char const *tag)
   /* If there already is a tag,
      return NULL if it does not match with new one */
   if (leg->leg_local->a_tag) {
-    if (su_casematch(tag, leg->leg_local->a_tag))
+    if (tag == NULL || su_casematch(tag, leg->leg_local->a_tag))
       return leg->leg_local->a_tag;
     else
       return NULL;